JP6255672B2 - Manufacturing method of multilayer capacitor - Google Patents

Description

  The present invention relates to a multilayer capacitor and a method for manufacturing the multilayer capacitor.

  2. Description of the Related Art Electronic parts such as multilayer capacitors are known that include an element body on which a mark for recognizing a direction is formed. As an electronic component manufacturing method, an electronic component including an element body on which the mark is formed is prepared, the electronic component is imaged, a mark is detected by performing image processing, and the direction of the electronic component is determined based on the detection result. Is known (see, for example, Patent Document 1).

JP 2001-217600 A

  However, when a mark is detected by performing image processing, the following problems may occur. Since the direction of the electronic component needs to be specified in advance so that the surface on which the mark is formed is imaged, the process may be complicated. It is necessary to prepare an imaging camera and an image processing device, and the device for identifying the direction may be expensive. In image recognition, the mark may be misrecognized. When forming a mark on an electronic component (element body), particularly when the electronic component is miniaturized, a region for forming the mark becomes extremely narrow, and it becomes difficult to appropriately form the mark itself.

  It is an object of the present invention to provide a multilayer capacitor and a method for manufacturing the multilayer capacitor that can easily and reliably determine the direction.

  The multilayer capacitor in accordance with the present invention has a substantially rectangular first and second main surfaces facing each other and a first side direction of the first and second main surfaces so as to connect the first and second main surfaces. First and second side surfaces that extend and face each other, and third and fourth side surfaces that extend in a second side direction orthogonal to the first side direction so as to connect the first and second main surfaces and face each other. , A first terminal electrode disposed on the first side surface of the element body, a second terminal electrode disposed on the second side surface of the element body, and disposed on the third side surface side of the element body A first outer conductor, a second outer conductor disposed on the fourth side of the element body, a first inner electrode disposed in the element body and connected to the first terminal electrode, and a first element in the element body And a second internal electrode connected to the second terminal electrode and disposed in the element body so as to face the first internal electrode in the facing direction of the second main surface. A first inner conductor connected to the first terminal electrode and the first outer conductor, and a second inner conductor disposed in the element body and connected to the second terminal electrode and the second outer conductor. It is characterized by.

  In the multilayer capacitor according to the present invention, the first internal conductor is electrically connected to the first internal electrode through the first terminal electrode, and the second internal conductor is electrically connected to the second internal electrode through the second terminal electrode. It is connected to the. The second inner conductor is not connected to the first outer conductor, and the first inner conductor is not connected to the second outer conductor. Therefore, between the first terminal electrode and the first outer conductor, and between the second terminal electrode and the second outer conductor are in a short-circuited state, between the first terminal electrode and the second outer conductor, And between the second terminal electrode and the first outer conductor, a capacitance is formed. A first probe to be brought into contact with either the first terminal electrode or the second terminal electrode and a second probe to be brought into contact with either the first outer conductor or the second outer conductor are prepared, With the position of the first and second probes defined, the first probe is brought into contact with either the first terminal electrode or the second terminal electrode and the second probe is contacted with the first outer conductor and the second outer conductor. When the electrical characteristics are measured by contacting either of these, the first main surface faces upward based on whether a short-circuited state or a state in which a capacitance is formed is detected. Or whether the second main surface is facing up. According to the present invention, it is possible to realize a multilayer capacitor that can easily and reliably determine a direction without using an image processing technique.

  The multilayer capacitor in accordance with the present invention has a substantially rectangular first and second main surfaces facing each other and a first side direction of the first and second main surfaces so as to connect the first and second main surfaces. First and second side surfaces that extend and face each other, and third and fourth side surfaces that extend in a second side direction orthogonal to the first side direction so as to connect the first and second main surfaces and face each other. , A first terminal electrode disposed on the first side surface of the element body, a second terminal electrode disposed on the second side surface of the element body, and disposed on the third side surface side of the element body A first outer conductor, a second outer conductor disposed on the fourth side of the element body, a first inner electrode disposed in the element body and connected to the first terminal electrode, and a first element in the element body And a second internal electrode connected to the second terminal electrode and disposed in the element body so as to face the first internal electrode in the facing direction of the second main surface. , Characterized in that it comprises a first inner conductor connected to the first terminal electrode and the first outer conductor, a.

  In the multilayer capacitor according to the present invention, the first internal conductor is electrically connected to the first internal electrode through the first terminal electrode. The second outer conductor is not connected to the first inner electrode, the second inner electrode, and the first inner conductor. Therefore, the first terminal electrode and the first outer conductor are short-circuited, and the electrostatic capacity is formed between the second terminal electrode and the first outer conductor. The first terminal electrode and the second outer conductor and the second terminal electrode and the second outer conductor are insulated. A first probe to be brought into contact with either the first terminal electrode or the second terminal electrode and a second probe to be brought into contact with either the first outer conductor or the second outer conductor are prepared, With the position of the first and second probes defined, the first probe is brought into contact with either the first terminal electrode or the second terminal electrode and the second probe is contacted with the first outer conductor and the second outer conductor. When the electrical characteristics are measured by contacting either of these, the first main surface faces upward based on whether a short-circuited state or a state in which a capacitance is formed is detected. Or whether the second main surface is facing up. According to the present invention, it is possible to realize a multilayer capacitor that can easily and reliably determine a direction without using an image processing technique.

  The multilayer capacitor in accordance with the present invention has a substantially rectangular first and second main surfaces facing each other and a first side direction of the first and second main surfaces so as to connect the first and second main surfaces. First and second side surfaces that extend and face each other, and third and fourth side surfaces that extend in a second side direction orthogonal to the first side direction so as to connect the first and second main surfaces and face each other. , A first terminal electrode disposed on the first side surface of the element body, a second terminal electrode disposed on the second side surface of the element body, and disposed on the third side surface side of the element body A plurality of first outer conductors, a second outer conductor disposed on the fourth side surface of the element body, and a plurality of first conductors disposed alternately in the opposing direction of the first and second main surfaces in the element body. And a plurality of first internal electrodes, all of the plurality of first internal electrodes are connected to the first outer conductor, and all of the plurality of second internal electrodes are connected to the second outer electrode. Characterized in that it is connected to the conductor.

  In the multilayer capacitor according to the present invention, the first terminal electrode and the first external conductor are electrically connected through all the first internal electrodes, and the second terminal electrode and the second external conductor are all connected to each other. It is electrically connected through two internal electrodes. Therefore, between the first terminal electrode and the first outer conductor, and between the second terminal electrode and the second outer conductor are in a short-circuited state, between the first terminal electrode and the second outer conductor, And between the second terminal electrode and the first outer conductor, a capacitance is formed. A first probe to be brought into contact with either the first terminal electrode or the second terminal electrode and a second probe to be brought into contact with either the first outer conductor or the second outer conductor are prepared, With the position of the first and second probes defined, the first probe is brought into contact with either the first terminal electrode or the second terminal electrode and the second probe is contacted with the first outer conductor and the second outer conductor. When the electrical characteristics are measured by contacting either of these, the first main surface faces upward based on whether a short-circuited state or a state in which a capacitance is formed is detected. Or whether the second main surface is facing up. According to the present invention, it is possible to realize a multilayer capacitor that can easily and reliably determine a direction without using an image processing technique.

  The multilayer capacitor in accordance with the present invention has a substantially rectangular first and second main surfaces facing each other and a first side direction of the first and second main surfaces so as to connect the first and second main surfaces. First and second side surfaces that extend and face each other, and third and fourth side surfaces that extend in a second side direction orthogonal to the first side direction so as to connect the first and second main surfaces and face each other. , A first terminal electrode disposed on the first side surface of the element body, a second terminal electrode disposed on the second side surface of the element body, and disposed on the third side surface side of the element body A plurality of first outer conductors, a second outer conductor disposed on the fourth side surface of the element body, and a plurality of first conductors disposed alternately in the opposing direction of the first and second main surfaces in the element body. And a plurality of first internal electrodes, all of the plurality of first internal electrodes being connected to the first external conductor.

  In the multilayer capacitor according to the present invention, the first terminal electrode and the first outer conductor are electrically connected through all the first inner electrodes. All the second internal electrodes are connected to the second terminal electrode, but are not connected to the second external conductor. That is, the second outer conductor is not electrically connected to the first and second terminal electrodes. Therefore, the first terminal electrode and the first outer conductor are short-circuited, and the electrostatic capacity is formed between the second terminal electrode and the first outer conductor. The first terminal electrode and the second outer conductor and the second terminal electrode and the second outer conductor are insulated. A first probe to be brought into contact with either the first terminal electrode or the second terminal electrode and a second probe to be brought into contact with either the first outer conductor or the second outer conductor are prepared, With the position of the first and second probes defined, the first probe is brought into contact with either the first terminal electrode or the second terminal electrode and the second probe is contacted with the first outer conductor and the second outer conductor. When the electrical characteristics are measured by contacting either of these, the first main surface faces upward based on whether a short-circuited state or a state in which a capacitance is formed is detected. Or whether the second main surface is facing up. According to the present invention, it is possible to realize a multilayer capacitor that can easily and reliably determine a direction without using an image processing technique.

  The manufacturing method of the multilayer capacitor according to the present invention includes a preparation step for preparing the multilayer capacitor, a first probe in contact with one of the first terminal electrode and the second terminal electrode, and a first external conductor and a second external conductor. And a determining step of contacting the second probe with any one of the conductors, measuring the electrical characteristics of the multilayer capacitor, and determining the direction of the multilayer capacitor.

  In the multilayer capacitor manufacturing method according to the present invention, as described above, the direction of the multilayer capacitor can be easily and reliably determined.

  A packing step of arranging and packing the multilayer capacitors based on the direction determined in the determination step may be further included. In this case, the multilayer capacitors can be arranged and packed so that the directions are aligned.

  ADVANTAGE OF THE INVENTION According to this invention, the manufacturing method of the multilayer capacitor which can identify a direction simply and reliably and a multilayer capacitor can be provided.

1 is a perspective view showing a multilayer capacitor according to a first embodiment. It is a figure for demonstrating the cross-sectional structure of the multilayer capacitor which concerns on 1st Embodiment. It is a figure which shows a 1st and 2nd internal electrode. It is a figure which shows a 1st and 2nd internal conductor. It is a figure for demonstrating a discrimination | determination process. It is a figure for demonstrating a discrimination | determination process. It is a figure for demonstrating a discrimination | determination process. It is a figure for demonstrating a discrimination | determination process. It is a figure for demonstrating a packing process. It is a figure for demonstrating the cross-sectional structure of the multilayer capacitor which concerns on 2nd Embodiment. It is a figure for demonstrating a discrimination | determination process. It is a figure for demonstrating a discrimination | determination process. It is a figure for demonstrating a discrimination | determination process. It is a figure for demonstrating a discrimination | determination process. It is a figure for demonstrating a packing process. It is a figure for demonstrating the cross-sectional structure of the multilayer capacitor which concerns on 3rd Embodiment. It is a figure which shows a 1st and 2nd internal electrode. It is a figure for demonstrating a discrimination | determination process. It is a figure for demonstrating a discrimination | determination process. It is a figure for demonstrating a discrimination | determination process. It is a figure for demonstrating a discrimination | determination process. It is a figure for demonstrating a packing process. It is a figure for demonstrating the cross-sectional structure of the multilayer capacitor which concerns on 4th Embodiment. It is a figure which shows a 1st and 2nd internal electrode. It is a figure for demonstrating a discrimination | determination process. It is a figure for demonstrating a discrimination | determination process. It is a figure for demonstrating a discrimination | determination process. It is a figure for demonstrating a discrimination | determination process. It is a figure for demonstrating a packing process. It is a figure for demonstrating the cross-sectional structure of the multilayer capacitor which concerns on the modification of this embodiment.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description, the same reference numerals are used for the same elements or elements having the same function, and redundant description is omitted.

(First embodiment)
First, the configuration of the multilayer capacitor C1 according to the first embodiment will be described with reference to FIGS. FIG. 1 is a perspective view showing the multilayer capacitor in accordance with the first embodiment. FIG. 2 is a diagram for explaining a cross-sectional configuration of the multilayer capacitor in accordance with the first embodiment.

  As shown in FIG. 1, the multilayer capacitor C <b> 1 includes an element body L having dielectric characteristics, first and second terminal electrodes 1 and 2 disposed on the outer surface of the element body L, and an outer surface of the element body L. The first and second outer conductors 3 and 4 are arranged.

  As shown in FIG. 1, the element body L has a substantially rectangular parallelepiped shape, and has substantially rectangular first and second main surfaces La and Lb facing each other as outer surfaces thereof, and first and second side surfaces facing each other. Lc, Ld and opposing third and fourth side surfaces Le, Lf. The first and second side surfaces Lc and Ld extend in the short side direction of the first and second main surfaces La and Lb so as to connect the first and second main surfaces. The third and fourth side surfaces Le and Lf extend in the long side direction of the first and second main surfaces La and Lb so as to connect the first and second main surfaces.

  The first terminal electrode 1 is disposed on the first side face Lc side of the element body L. The first terminal electrode 1 covers the entire surface of the first side face Lc, and ends of the first and second main faces La and Lb and the third and fourth side faces Le and Lf (ends on the first side face Lc side). It is formed over. The second terminal electrode 2 is disposed on the second side face Ld side of the element body L. The second terminal electrode 2 covers the entire surface of the second side face Ld, and ends of the first and second main faces La and Lb and the third and fourth side faces Le and Lf (ends on the second side face Ld side). It is formed over. The first and second terminal electrodes 1 and 2 are opposed to the opposing direction of the first and second side faces Lc and Ld.

  The first outer conductor 3 is disposed on the third side face Le side of the element body L. The first outer conductor 3 covers substantially the center in the opposing direction of the first and second side faces Lc, Ld of the third side face Le so as to cross along the opposing direction of the first and second main faces La, Lb. ing. The first outer conductor 3 further covers part of the end portions on the third side face Le side of the first and second main faces La and Lb.

  The second outer conductor 4 is disposed on the fourth side face Lf side of the element body L. The second outer conductor 4 covers substantially the center of the fourth side face Lf in the opposing direction of the first and second side faces Lc and Ld so as to cross the opposing direction of the first and second main faces La and Lb. ing. The second outer conductor 4 further covers part of the end portions on the fourth side face Lf side of the first and second main faces La and Lb. The first and second outer conductors 3 and 4 face each other in the facing direction of the third and fourth side faces Le and Lf.

  The first and second terminal electrodes 1 and 2 and the first and second outer conductors 3 and 4 are formed by applying a conductive paste containing, for example, conductive metal powder and glass frit to the outer surface of the element body L and baking it. Formed by. If necessary, a plating layer may be formed on the baked terminal electrode and the outer conductor. The terminal electrodes 1 and 2 and the outer conductors 3 and 4 are formed on the outer surface of the element body L so as to be electrically insulated from each other.

The element body L is configured by laminating a plurality of insulator layers in the opposing direction of the first and second main surfaces La and Lb. That is, in the element body L, the facing direction of the first and second main surfaces La and Lb coincides with the stacking direction of the plurality of insulator layers. Each insulator layer is made of a sintered body of a ceramic green sheet containing, for example, a dielectric ceramic (a dielectric ceramic such as BaTiO ₃ series, Ba (Ti, Zr) O ₃ series, or (Ba, Ca) TiO ₃ series). Composed. The actual element body L is integrated so that the boundary between the insulating layers cannot be visually recognized.

  As shown in FIG. 2, the element body L includes an inner layer portion L1 and a pair of outer layer portions L2 and L3 disposed so as to sandwich the inner layer portion L1 therebetween. A main surface facing the main surface in contact with the inner layer portion L1 in the outer layer portion L2 constitutes a first main surface La. The main surface facing the main surface in contact with the inner layer portion L1 in the outer layer portion L3 constitutes the second main surface Lb. In the present embodiment, the thickness of the outer layer portion L2 is set to be thicker than the thickness of the outer layer portion L3.

  As illustrated in FIG. 2, the multilayer capacitor C <b> 1 includes a plurality of first internal electrodes 11, a plurality of second internal electrodes 13, a first internal conductor 15, and a second internal conductor 17. The plurality of first internal electrodes 11, the plurality of second internal electrodes 13, the first internal conductor 15, and the second internal conductor 17 are disposed in the inner layer portion L1. The internal electrodes 11 and 13 and the internal conductors 15 and 17 are made of a conductive material (for example, Ni or Cu) that is usually used as an internal electrode of a laminated electric element. The internal electrodes 11 and 13 and the internal conductors 15 and 17 are configured as a sintered body of a conductive paste containing the conductive material.

  The 1st internal electrode 11 and the 2nd internal electrode 13 are arrange | positioned in a different position (layer) in the opposing direction (lamination direction of a some insulator layer) of 1st and 2nd main surface La, Lb. That is, the first internal electrode 11 and the second internal electrode 13 are alternately arranged in the element body L so as to face each other with a gap in the facing direction of the first and second main faces La and Lb. Yes.

  The first and second inner conductors 15 and 17 are disposed at different positions (layers) in the opposing direction of the first and second inner electrodes 11 and 13 and the first and second main surfaces La and Lb. Both the first inner conductor 15 and the second inner conductor 17 are arranged at different positions (layers) in the opposing direction of the first and second main faces La and Lb. In this embodiment, the 1st and 2nd internal conductors 15 and 17 and the 1st and 2nd internal electrodes 11 and 13 are arrange | positioned in the element body L so that polarity may change alternately. That is, the first internal conductor 15 and the second internal conductor 17 function as internal electrodes that generate capacitance, as with the first and second internal electrodes 11 and 13.

  As shown in FIG. 3A, the first internal electrode 11 has a main electrode portion 11a and a lead electrode portion 11b. The lead electrode portion 11b extends from the main electrode portion 11a so as to be exposed at the first side face Lc. The main electrode portion 11a and the extraction electrode portion 11b are integrally formed. The main electrode portion 11a has a rectangular shape in which the opposing direction of the first and second side faces Lc, Ld is the long side direction and the opposing direction of the third and fourth side faces Le, Lf is the short side direction. The lead electrode portion 11b extends from the end portion on the first side face Lc side of the main electrode portion 11a to the first side face Lc with the same width as the main electrode portion 11a. The lead electrode part 11b has an end exposed at the first side face Lc, and is connected to the first terminal electrode 1 at the exposed end.

  As shown in FIG. 3B, the second internal electrode 13 has a main electrode portion 13a and an extraction electrode portion 13b. The extraction electrode portion 13b extends from the main electrode portion 13a so as to be exposed at the second side face Ld. The main electrode portion 13a and the extraction electrode portion 13b are integrally formed. The main electrode portion 13a faces the first internal electrode 11 (main electrode portion 11a). The main electrode portion 13a has a rectangular shape in which the opposing direction of the first and second side faces Lc, Ld is the long side direction and the opposing direction of the third and fourth side faces Le, Lf is the short side direction. The lead electrode portion 13b extends from the end portion on the second side face Ld side of the main electrode portion 13a to the second side face Ld with the same width as the main electrode portion 13a. An end of the extraction electrode portion 13 b is exposed at the second side face Ld, and the exposed end portion is connected to the second terminal electrode 2.

  The 1st terminal electrode 1 is formed so that all the parts exposed to the 1st side surface Lc of the extraction electrode part 11b may be covered, and the extraction electrode part 11b is connected to the 1st terminal electrode 1 physically and electrically. The As a result, each first internal electrode 11 is connected to the first terminal electrode 1. The second terminal electrode 2 is formed so as to cover all portions exposed to the second side face Ld of the extraction electrode portion 13b, and the extraction electrode portion 13b is physically and electrically connected to the second terminal electrode 2. The Thereby, each second internal electrode 13 is connected to the second terminal electrode 2.

  As shown in FIG. 4A, the first inner conductor 15 has a first conductor portion 15a, a second conductor portion 15b, and a third conductor portion 15c. The second conductor portion 15b extends from the first conductor portion 15a so as to be exposed at the first side face Lc. The third conductor portion 15c extends from the first conductor portion 15a so as to be exposed at the third side face Le. The first conductor portion 15a, the second conductor portion 15b, and the third conductor portion 15c are integrally formed.

  The first conductor portion 15a has a rectangular shape in which the opposing direction of the first and second side faces Lc, Ld is the long side direction and the opposing direction of the third and fourth side faces Le, Lf is the short side direction. The second conductor portion 15b extends from the end of the first conductor portion 15a on the first side face Lc side to the first side face Lc with the same width as the first conductor portion 15a. The end of the second conductor portion 15b is exposed at the first side face Lc, and is connected to the first terminal electrode 1 at the exposed end. The third conductor portion 15c extends from the end portion of the first conductor portion 15a on the third side surface Le side to the third side surface Le. The end of the third conductor portion 15c is exposed at the third side face Le, and is connected to the first outer conductor 3 at the exposed end.

  As shown in FIG. 4B, the second inner conductor 17 has a first conductor portion 17a, a second conductor portion 17b, and a third conductor portion 17c. The second conductor portion 17b extends from the first conductor portion 17a so as to be exposed at the second side face Ld. The third conductor portion 17c extends from the first conductor portion 17a so as to be exposed at the fourth side face Lf. The first conductor portion 17a, the second conductor portion 17b, and the third conductor portion 17c are integrally formed.

  The first conductor portion 17a has a rectangular shape in which the opposing direction of the first and second side faces Lc, Ld is the long side direction and the opposing direction of the third and fourth side faces Le, Lf is the short side direction. The second conductor portion 17b extends from the end of the first conductor portion 17a on the second side face Ld side to the second side face Ld with the same width as the first conductor portion 17a. The end of the second conductor portion 17b is exposed at the second side face Ld, and is connected to the second terminal electrode 2 at the exposed end. The third conductor portion 17c extends from the end portion of the first conductor portion 17a on the fourth side face Lf side to the fourth side face Lf. The end of the third conductor portion 17c is exposed at the fourth side face Lf, and the exposed end is connected to the second outer conductor 4.

  The 1st terminal electrode 1 is formed so that all the parts exposed to the 1st side Lc of the 2nd conductor part 15b may be covered, and the 2nd conductor part 15b is physically and electrically to the 1st terminal electrode 1. Connected. The first outer conductor 3 is formed so as to cover all the portions exposed to the third side face Le of the third conductor portion 15c, and the second conductor portion 15b is physically and electrically connected to the first outer conductor 3. Connected. As a result, each first inner conductor 15 is connected to the first terminal electrode 1 and the first outer conductor 3.

  The second terminal electrode 2 is formed so as to cover all portions exposed to the second side face Ld of the second conductor portion 17b, and the second conductor portion 17b is physically and electrically connected to the second terminal electrode 2. Connected. The second outer conductor 4 is formed so as to cover all the portions exposed to the fourth side face Lf of the third conductor portion 17c, and the second conductor portion 17b is physically and electrically connected to the second outer conductor 4. Connected. As a result, each second inner conductor 17 is connected to the second terminal electrode 2 and the second outer conductor 4.

  In the multilayer capacitor C1, the first main surface La is preferably mounted on the electronic device as a mounting surface for the electronic device (for example, a circuit board or an electronic component). When the multilayer capacitor C1 is mounted so that the first main surface La of the element body L faces the circuit board, the first and second terminal electrodes 1 and 2 are land electrodes formed on the board and connected to the signal wiring. Connected to. The first and second outer conductors 3 and 4 are not connected to the land electrodes formed on the substrate and connected to the signal wiring. That is, only the first and second terminal electrodes 1 and 2 are electrically connected to the wiring, and the first and second outer conductors 3 and 4 are not electrically connected to the wiring. As long as the first and second outer conductors 3 and 4 are land electrodes that are electrically insulated from the wiring, they may be connected to the land electrodes.

  When a voltage is applied to the multilayer capacitor, mechanical distortion having a magnitude corresponding to the applied voltage is generated in the element body due to the electrostrictive effect. In particular, when an AC voltage is applied, vibration (hereinafter referred to as electrostrictive vibration) occurs in the multilayer capacitor due to the mechanical strain. For this reason, when a multilayer capacitor is mounted on an electronic device and an AC voltage is applied, electrostrictive vibration propagates to the electronic device and a so-called noise may occur.

  In the multilayer capacitor C1, the thickness of the outer layer portion L2 is set larger than the thickness of the outer layer portion L3. When the multilayer capacitor C1 is mounted so that the first main surface La of the element body L faces the electronic device, the distance from the electronic device to the inner layer portion L1 is relatively separated, and electrostrictive vibration is generated in the electronic device. It is difficult to propagate to the sound and the generation of squealing can be suppressed. Therefore, when the multilayer capacitor C1 is mounted, the direction of the element body L (the direction in the facing direction of the first and second main surfaces La and Lb) is such that the first main surface La faces the electronic device. It is preferable to pack in the packing material 30 mentioned later in the aligned state.

  Next, a method for manufacturing the multilayer capacitor C1 according to the first embodiment will be described with reference to FIGS. 5-8 is a figure for demonstrating a discrimination | determination process. FIG. 9 is a diagram for explaining the packing process.

  First, the multilayer capacitor C1 is prepared (preparation process). The multilayer capacitor C1 is formed by laminating ceramic green sheets on which electrode patterns are formed, a laminate forming process for forming a sheet laminate, a cutting process for cutting the sheet laminate into individual laminate chips, and firing the laminate chips. It is prepared through a firing process for obtaining an element body and a terminal electrode formation process for forming a terminal electrode (external conductor) or the like on the element body. Each of these steps is known in the art, and further detailed description is omitted.

  Next, the direction of the prepared multilayer capacitor C1 is discriminated (discrimination step). Here, the discrimination device 21 shown in FIGS. 5 to 8 is used, and the direction in the facing direction of the first and second main surfaces La and Lb, that is, the first main surface La is the upper direction as the direction of the multilayer capacitor C1. Or whether the second main surface Lb is facing upward. The discrimination device 21 includes a first probe 23, a second probe 25, and a measuring instrument 27 to which the first and second probes 23, 25 are connected.

  The measuring instrument 27 measures the electrical characteristics of the multilayer capacitor C1. In the present embodiment, whether the measuring instrument 27 is in a state in which the capacitance is formed, short-circuited, or insulated between the first probe 23 and the second probe 25. Measure. The first probe 23 and the second probe 25 are such that the first probe 23 is in contact with either the first terminal electrode 1 or the second terminal electrode 2 and the second probe 25 is in contact with the first outer conductor 3 and the second outer electrode. The position is defined with respect to the element body L (multilayer capacitor C1) so as to contact either one of the conductors 4.

  A discrimination device 21 is prepared, and as shown in FIGS. 5 to 8, the multilayer capacitors C1 are sequentially set on the discrimination device 21, and the direction of each multilayer capacitor C1 is discriminated. Here, the direction of the multilayer capacitor C1 is determined in the state where the multilayer capacitor C1 is set in the determination device 21 as follows.

  In FIG. 5, the multilayer capacitor C <b> 1 is determined in a state where the terminal electrode in contact with the first probe 23 is the first terminal electrode 1 and the outer conductor in contact with the second probe 25 is the first outer conductor 3. 21 is set. Since the first terminal electrode 1 and the first outer conductor 3 are electrically connected through the first inner conductor 15, the first terminal electrode 1 and the first outer conductor 3 are short-circuited. Accordingly, the measuring instrument 27 determines that the first probe 23 and the second probe 25 are in a short-circuited state, and the direction of the multilayer capacitor C1 is in a state where the first main surface La faces upward. It is determined that there is.

  In FIG. 6, the multilayer capacitor C <b> 1 is determined in a state where the terminal electrode in contact with the first probe 23 is the second terminal electrode 2 and the outer conductor in contact with the second probe 25 is the second outer conductor 4. 21 is set. Since the second terminal electrode 2 and the second outer conductor 4 are electrically connected through the second inner conductor 17, the second terminal electrode 2 and the second outer conductor 4 are short-circuited. Accordingly, the measuring instrument 27 determines that the first probe 23 and the second probe 25 are in a short-circuited state, and the direction of the multilayer capacitor C1 is in a state where the first main surface La faces upward. It is determined that there is.

  In FIG. 7, the multilayer capacitor C <b> 1 has a discrimination device in a state where the terminal electrode in contact with the first probe 23 is the second terminal electrode 2 and the outer conductor in contact with the second probe 25 is the first outer conductor 3. 21 is set. Since the first outer conductor 3 is electrically connected to the first inner electrode 11 through the first inner conductor 15 and the first terminal electrode 1, there is no static between the second terminal electrode 2 and the first outer conductor 3. It is in a state where a capacitance is formed. Therefore, the measuring instrument 27 determines that a capacitance is formed between the first probe 23 and the second probe 25, and the direction of the multilayer capacitor C1 is such that the second main surface Lb is up. It is determined that it is in the facing state.

  In FIG. 8, the multilayer capacitor C <b> 1 is determined in a state where the terminal electrode in contact with the first probe 23 is the first terminal electrode 1 and the outer conductor in contact with the second probe 25 is the second outer conductor 4. 21 is set. Since the second outer conductor 4 is electrically connected to the second inner electrode 13 through the second inner conductor 17 and the second terminal electrode 2, there is no static between the first terminal electrode 1 and the second outer conductor 4. It is in a state where a capacitance is formed. Therefore, the measuring instrument 27 determines that a capacitance is formed between the first probe 23 and the second probe 25, and the direction of the multilayer capacitor C1 is such that the second main surface Lb is up. It is determined that it is in the facing state.

  Next, based on the direction of the multilayer capacitor C1 determined in the determination step, the multilayer capacitor C1 is arranged and packed in a state where the directions of the multilayer capacitor C1 are aligned (packing step). Here, as shown in FIG. 9, the multilayer capacitor C <b> 1 is packed in a packing material 30. The packing material 30 includes a carrier tape 31 and a cover tape 32. The carrier tape 31 is formed with a plurality of concave portions 31a having a quadrangular cross section in a two-dimensional array. The multilayer capacitor C1 is accommodated in each of the recesses 31a.

  The multilayer capacitor C1 is accommodated in the recess 31a so that the second main surface Lb faces the opening side of the carrier tape 31. That is, the multilayer capacitor C1 is accommodated in the recess 31a so that the first main surface La faces the bottom surface of the recess 31a. Thereafter, the cover tape 32 covers the opening of the recess 31a, and the packaging is completed. In packing the multilayer capacitor C1 into the packaging material 30, only the multilayer capacitor C1 determined in the determination step that the second main surface Lb is facing upward is selected, and the selected multilayer capacitor C1 is selected. The second main surface Lb may be stored in the recess 31a while maintaining the state in which the second main surface Lb faces upward.

  The multilayer capacitor C1 packed in the packing material 30 is mounted on an electronic device by being picked from the recess 31a of the carrier tape 31 by a suction head of a surface mount mounter. The mounting direction of the multilayer capacitor C1 during mounting is determined by the direction in which the multilayer capacitor C1 is housed in the recess 31a of the carrier tape 31. In the present embodiment, since the second main surface Lb is packed in the packing step so as to face the opening side of the carrier tape 31, the suction nozzle comes into contact with the second main surface Lb. Thereby, 1st main surface La facing 2nd main surface Lb turns into the mounting surface side of a mounting board.

  As described above, according to the first embodiment, the direction of the multilayer capacitor C1 can be easily and reliably determined without using an image processing technique. Further, the direction of the multilayer capacitor C1 can be determined without forming a mark for recognizing the direction on the element body L. Therefore, when determining the direction of the multilayer capacitor C1 that has been reduced in size, the direction can be reliably determined.

(Second Embodiment)
Next, the configuration of the multilayer capacitor C2 according to the second embodiment will be described with reference to FIG. FIG. 10 is a diagram for explaining a cross-sectional configuration of the multilayer capacitor in accordance with the second embodiment.

  Similarly to the multilayer capacitor C1, the multilayer capacitor C2 includes the element body L, the first and second terminal electrodes 1 and 2 and the first and second outer conductors 3 and 4 disposed on the outer surface of the element body L. I have. As shown in FIG. 10, the multilayer capacitor C <b> 2 includes a plurality of first internal electrodes 11, a plurality of second internal electrodes 13, and a first internal conductor 15. That is, the multilayer capacitor C2 is different from the multilayer capacitor C1 in that the second internal conductor 17 is not provided.

  The first and second inner electrodes 11 and 13 and the first inner conductor 15 are not connected to the second outer conductor 4. Therefore, the second outer conductor 4 is in an electrically floating state from the first and second terminal electrodes 1 and 2 and the first outer conductor 3.

  Next, a method for manufacturing the multilayer capacitor C2 according to the second embodiment will be described with reference to FIGS. FIGS. 11-14 is a figure for demonstrating a discrimination | determination process. FIG. 15 is a diagram for explaining the packing process.

  First, the multilayer capacitor C2 is prepared (preparation process). This preparation step is known in the technical field, as is the preparation step for the multilayer capacitor C1, and detailed description thereof is omitted.

  Next, the direction of the prepared multilayer capacitor C2 is determined (a determination step). Here, as in the first embodiment, the discrimination device 21 is used, and the direction in the facing direction of the first and second main surfaces La and Lb, that is, the first main surface La faces upward as the direction of the multilayer capacitor C2. Or whether the second main surface Lb is facing upward.

  A discrimination device 21 is prepared, and as shown in FIGS. 11 to 15, the multilayer capacitors C2 are sequentially set on the discrimination device 21, and the direction of each multilayer capacitor C2 is discriminated. Here, the direction of the multilayer capacitor C2 is determined in the state where the multilayer capacitor C2 is set in the determination device 21 as follows.

  In FIG. 11, the multilayer capacitor C <b> 2 is determined in the state where the terminal electrode in contact with the first probe 23 is the first terminal electrode 1 and the outer conductor in contact with the second probe 25 is the first outer conductor 3. 21 is set. Since the first terminal electrode 1 and the first outer conductor 3 are electrically connected through the first inner conductor 15, the first terminal electrode 1 and the first outer conductor 3 are short-circuited. Therefore, the measuring instrument 27 determines that the first probe 23 and the second probe 25 are short-circuited, and the direction of the multilayer capacitor C2 is such that the first main surface La faces upward. It is determined that there is.

  In FIG. 12, in the state where the terminal electrode in contact with the first probe 23 is the second terminal electrode 2 and the outer conductor in contact with the second probe 25 is the second outer conductor 4, the multilayer capacitor C 2 is the discrimination device. 21 is set. Since the second terminal electrode 2 and the second outer conductor 4 are not electrically connected, the second terminal electrode 2 and the second outer conductor 4 are insulated. Therefore, the measuring instrument 27 determines that the first probe 23 and the second probe 25 are insulated, and determines that the direction of the multilayer capacitor C2 is unknown.

  In FIG. 13, the multilayer capacitor C <b> 2 is determined in the state where the terminal electrode in contact with the first probe 23 is the second terminal electrode 2 and the outer conductor in contact with the second probe 25 is the first outer conductor 3. 21 is set. Since the first outer conductor 3 is electrically connected to the first inner electrode 11 through the first inner conductor 15 and the first terminal electrode 1, there is no static between the second terminal electrode 2 and the first outer conductor 3. It is in a state where a capacitance is formed. Therefore, the measuring instrument 27 determines that a capacitance is formed between the first probe 23 and the second probe 25, and the direction of the multilayer capacitor C2 is such that the second main surface Lb is up. It is determined that it is in the facing state.

  In FIG. 14, the multilayer capacitor C <b> 2 is determined in the state where the terminal electrode in contact with the first probe 23 is the first terminal electrode 1 and the outer conductor in contact with the second probe 25 is the second outer conductor 4. 21 is set. Since the first terminal electrode 1 and the second outer conductor 4 are not electrically connected, the first terminal electrode 1 and the second outer conductor 4 are insulated. Therefore, the measuring instrument 27 determines that the first probe 23 and the second probe 25 are insulated, and determines that the direction of the multilayer capacitor C2 is unknown.

  Next, based on the direction of the multilayer capacitor C2 determined in the determination step, the multilayer capacitor C2 is arranged and packed in a state where the directions of the multilayer capacitor C2 are aligned (packing step). As shown in FIG. 15, the multilayer capacitor C <b> 2 is accommodated in the recess 31 a so that the second main surface Lb faces the opening side of the carrier tape 31. Thereafter, the cover tape 32 covers the opening of the recess 31a, and the packaging is completed. In packing the multilayer capacitor C2 into the packaging material 30, only the multilayer capacitor C2 determined in the determination process that the second main surface Lb is facing upward is selected, and the selected multilayer capacitor C2 is selected. The second main surface Lb may be stored in the recess 31a while maintaining the state in which the second main surface Lb faces upward.

  As described above, according to the second embodiment as well, the direction of the multilayer capacitor C2 can be easily and reliably determined without using an image processing technique. Further, the direction of the multilayer capacitor C2 can be determined without forming a mark for recognizing the direction on the element body L. Therefore, when determining the direction of the multilayer capacitor C2 that has been reduced in size, the direction can be reliably determined.

(Third embodiment)
Next, a configuration of the multilayer capacitor C3 according to the third embodiment will be described with reference to FIG. FIG. 16 is a view for explaining a cross-sectional configuration of the multilayer capacitor in accordance with the third embodiment.

  Similarly to the multilayer capacitor C1, the multilayer capacitor C3 includes an element body L, first and second terminal electrodes 1 and 2 and first and second outer conductors 3 and 4 arranged on the outer surface of the element body L. I have. As illustrated in FIG. 16, the multilayer capacitor C <b> 3 includes a plurality of first internal electrodes 11 and a plurality of second internal electrodes 13. In the third embodiment, the conductors arranged in the element body L are only the first and second internal electrodes 11 and 13.

  As shown in FIG. 17A, all the first internal electrodes 11 have a main electrode portion 11a, an extraction electrode portion 11b, and an extraction electrode portion 11c. The lead electrode portion 11c extends from the main electrode portion 11a so as to be exposed at the third side face Le. The main electrode portion 11a, the extraction electrode portion 11b, and the extraction electrode portion 11c are integrally formed. The extraction electrode part 11c extends from the end part on the third side face Le side of the main electrode part 11a to the third side face Le. The lead electrode part 11c has an end exposed at the third side face Le, and is connected to the first outer conductor 3 at the exposed end.

  As shown in FIG. 17B, all the second internal electrodes 13 have a main electrode portion 13a, an extraction electrode portion 13b, and an extraction electrode portion 13c. The extraction electrode portion 13c extends from the main electrode portion 13a so as to be exposed at the fourth side face Lf. The main electrode portion 13a, the extraction electrode portion 13b, and the extraction electrode portion 13c are integrally formed. The extraction electrode portion 13c extends from the end portion on the fourth side face Lf side of the main electrode portion 13a to the fourth side face Lf. The lead electrode portion 13 c has an end exposed at the fourth side face Lf, and is connected to the second external conductor 4 at the exposed end portion.

  The first outer conductor 3 is formed so as to cover all portions exposed to the third side face Le of the extraction electrode portion 11c, and the extraction electrode portion 11c is physically and electrically connected to the first outer conductor 3. The As a result, all the first internal electrodes 11 are connected to the first terminal electrode 1 and the first external conductor 3. All the second inner electrodes 13 are not connected to the first outer conductor 3.

  The second outer conductor 4 is formed so as to cover all portions exposed to the fourth side face Lf of the extraction electrode portion 13c, and the extraction electrode portion 13c is physically and electrically connected to the second outer conductor 4. The As a result, all the second internal electrodes 13 are connected to the second terminal electrode 2 and the second external conductor 4. All the first inner electrodes 11 are not connected to the second outer conductor 4.

  Next, with reference to FIGS. 18-22, the manufacturing method of the multilayer capacitor C3 which concerns on 3rd Embodiment is demonstrated. 18-21 is a figure for demonstrating a discrimination | determination process. FIG. 22 is a diagram for explaining the packing process.

  First, the multilayer capacitor C3 is prepared (preparation process). This preparation step is known in the technical field, as is the preparation step for the multilayer capacitor C1, and detailed description thereof is omitted.

  Next, the direction of the prepared multilayer capacitor C3 is determined (a determination step). Here, as in the first and second embodiments, the discrimination device 21 is used, and the direction in the facing direction of the first and second main surfaces La and Lb, that is, the first main surface La is the direction of the multilayer capacitor C3. It is determined whether it is facing upward or whether the second main surface Lb is facing upward.

  A discrimination device 21 is prepared, and as shown in FIGS. 18 to 22, the multilayer capacitors C3 are sequentially set on the discrimination device 21, and the direction of each multilayer capacitor C3 is discriminated. Here, the direction of the multilayer capacitor C3 is determined in the state where the multilayer capacitor C3 is set in the determination device 21 as follows.

  In FIG. 18, the multilayer capacitor C <b> 3 is determined in a state where the terminal electrode in contact with the first probe 23 is the first terminal electrode 1 and the outer conductor in contact with the second probe 25 is the first outer conductor 3. 21 is set. Since the first terminal electrode 1 and the first outer conductor 3 are electrically connected through all the first inner electrodes 11, the first terminal electrode 1 and the first outer conductor 3 are short-circuited. . Accordingly, the measuring instrument 27 determines that the first probe 23 and the second probe 25 are in a short-circuited state, and the direction of the multilayer capacitor C3 is in a state where the first main surface La faces upward. It is determined that there is.

  In FIG. 19, the multilayer capacitor C3 is a discriminating device when the terminal electrode in contact with the first probe 23 is the second terminal electrode 2 and the outer conductor in contact with the second probe 25 is the second outer conductor 4. 21 is set. Since the second terminal electrode 2 and the second outer conductor 4 are electrically connected through all the second inner electrodes 13, the second terminal electrode 2 and the second outer conductor 4 are short-circuited. . Accordingly, the measuring instrument 27 determines that the first probe 23 and the second probe 25 are in a short-circuited state, and the direction of the multilayer capacitor C3 is in a state where the first main surface La faces upward. It is determined that there is.

  In FIG. 20, the multilayer capacitor C3 is in a state where the terminal electrode in contact with the first probe 23 is the second terminal electrode 2 and the outer conductor in contact with the second probe 25 is the first outer conductor 3. 21 is set. Since the first outer conductor 3 is connected to all the first inner electrodes 11, a capacitance is formed between the second terminal electrode 2 and the first outer conductor 3. Therefore, the measuring instrument 27 determines that a capacitance is formed between the first probe 23 and the second probe 25, and the direction of the multilayer capacitor C3 is such that the second main surface Lb is up. It is determined that it is in the facing state.

  In FIG. 21, the multilayer capacitor C3 is in a state where the terminal electrode in contact with the first probe 23 is the first terminal electrode 1 and the outer conductor in contact with the second probe 25 is the second outer conductor 4. 21 is set. Since the second outer conductor 4 is connected to all the second inner electrodes 13, a capacitance is formed between the first terminal electrode 1 and the second outer conductor 4. Therefore, the measuring instrument 27 determines that a capacitance is formed between the first probe 23 and the second probe 25, and the direction of the multilayer capacitor C3 is such that the second main surface Lb is up. It is determined that it is in the facing state.

  Next, based on the direction of the multilayer capacitor C3 determined in the determination step, the multilayer capacitor C3 is arranged and packed in a state where the directions of the multilayer capacitor C3 are aligned (packing step). As shown in FIG. 22, the multilayer capacitor C <b> 3 is accommodated in the recess 31 a so that the second main surface Lb faces the opening side of the carrier tape 31. Thereafter, the cover tape 32 covers the opening of the recess 31a, and the packaging is completed. In packing the multilayer capacitor C3 into the packaging material 30, only the multilayer capacitor C3 determined in the determination process that the second main surface Lb is facing upward is selected, and the selected multilayer capacitor C3 is selected. The second main surface Lb may be stored in the recess 31a while maintaining the state in which the second main surface Lb faces upward.

  As described above, according to the third embodiment, the direction of the multilayer capacitor C3 can be easily and reliably determined without using an image processing technique. Further, the direction of the multilayer capacitor C3 can be determined without forming a mark for recognizing the direction on the element body L. Therefore, when determining the direction of the multilayer capacitor C3 that has been reduced in size, the direction can be reliably determined.

  In the third embodiment, when the multilayer capacitor C3 is manufactured, an electrode pattern that forms the first internal electrode 11 and an electrode pattern that forms the second internal electrode 13 may be formed. Compared to the first and second embodiments, the manufacturing process is simplified.

(Fourth embodiment)
Next, a configuration of the multilayer capacitor C4 according to the fourth embodiment will be described with reference to FIG. FIG. 23 is a diagram for explaining a cross-sectional configuration of the multilayer capacitor in accordance with the fourth embodiment.

  Similarly to the multilayer capacitor C1, the multilayer capacitor C4 includes the element body L, the first and second terminal electrodes 1 and 2 and the first and second outer conductors 3 and 4 disposed on the outer surface of the element body L. I have. As shown in FIG. 23, the multilayer capacitor C4 includes a plurality of first internal electrodes 11 and a plurality of second internal electrodes 13. In the fourth embodiment, the conductors arranged in the element body L are only the first and second internal electrodes 11 and 13.

  As shown in FIG. 24A, all the first internal electrodes 11 have a main electrode portion 11a, an extraction electrode portion 11b, and an extraction electrode portion 11c. As shown in FIG. 24B, all the second internal electrodes 13 have a main electrode portion 13a and an extraction electrode portion 13b. That is, the fourth embodiment is different from the above-described third embodiment in that all the second internal electrodes 13 do not have the extraction electrode portion 13c.

  All the first inner electrodes 11 are connected to the first outer conductor 3, and all the first and second inner electrodes 11, 13 are not connected to the second outer conductor 4. Therefore, the second outer conductor 4 is in an electrically floating state from the first and second terminal electrodes 1 and 2 and the first outer conductor 3.

  Next, with reference to FIGS. 25-29, the manufacturing method of the multilayer capacitor C4 which concerns on 4th Embodiment is demonstrated. 25 to 28 are diagrams for explaining the determination process. FIG. 29 is a diagram for explaining the packing process.

  First, the multilayer capacitor C4 is prepared (preparation process). This preparation step is known in the technical field, as is the preparation step for the multilayer capacitor C1, and detailed description thereof is omitted.

  Next, the direction of the prepared multilayer capacitor C4 is determined (a determination step). Here, as in the first to third embodiments, the discrimination device 21 is used, and the direction in the facing direction of the first and second main surfaces La and Lb, that is, the first main surface La is the direction of the multilayer capacitor C4. It is determined whether it is facing upward or whether the second main surface Lb is facing upward.

  The discriminating device 21 is prepared, and as shown in FIGS. 25 to 28, the multilayer capacitors C4 are sequentially set in the discriminating device 21 to discriminate the direction of each multilayer capacitor C4. Here, the direction of the multilayer capacitor C4 is determined in the state where the multilayer capacitor C4 is set in the determination device 21 as follows.

  In FIG. 25, the multilayer capacitor C4 is in a state where the terminal electrode in contact with the first probe 23 is the first terminal electrode 1 and the outer conductor in contact with the second probe 25 is the first outer conductor 3. 21 is set. Since the first terminal electrode 1 and the first outer conductor 3 are electrically connected through all the first inner electrodes 11, the first terminal electrode 1 and the first outer conductor 3 are short-circuited. is there. Therefore, the measuring instrument 27 determines that the first probe 23 and the second probe 25 are in a short-circuited state, and the direction of the multilayer capacitor C4 is in a state in which the first main surface La faces upward. It is determined that there is.

  In FIG. 26, in the state where the terminal electrode in contact with the first probe 23 is the second terminal electrode 2 and the outer conductor in contact with the second probe 25 is the second outer conductor 4, the multilayer capacitor C4 is the discrimination device. 21 is set. Since the second terminal electrode 2 and the second outer conductor 4 are not electrically connected, the second terminal electrode 2 and the second outer conductor 4 are insulated. Therefore, the measuring instrument 27 determines that the first probe 23 and the second probe 25 are insulated, and determines that the direction of the multilayer capacitor C4 is unknown.

  In FIG. 27, the multilayer capacitor C4 is in a state where the terminal electrode in contact with the first probe 23 is the second terminal electrode 2 and the outer conductor in contact with the second probe 25 is the first outer conductor 3. 21 is set. Since the first outer conductor 3 is connected to all the first inner electrodes 11, a capacitance is formed between the second terminal electrode 2 and the first outer conductor 3. Therefore, the measuring instrument 27 determines that a capacitance is formed between the first probe 23 and the second probe 25, and the direction of the multilayer capacitor C4 is such that the second main surface Lb is up. It is determined that it is in the facing state.

  In FIG. 28, in the state where the terminal electrode in contact with the first probe 23 is the first terminal electrode 1 and the outer conductor in contact with the second probe 25 is the second outer conductor 4, the multilayer capacitor C4 is the discrimination device. 21 is set. Since the first terminal electrode 1 and the second outer conductor 4 are not electrically connected, the first terminal electrode 1 and the second outer conductor 4 are insulated. Therefore, the measuring instrument 27 determines that the first probe 23 and the second probe 25 are insulated, and determines that the direction of the multilayer capacitor C4 is unknown.

  Next, based on the direction of the multilayer capacitor C4 determined in the determination step, the multilayer capacitor C4 is arranged and packed in a state where the directions of the multilayer capacitor C4 are aligned (packing step). The multilayer capacitor C4 is accommodated in the recess 31a so that the second main surface Lb faces the opening side of the carrier tape 31, as shown in FIG. Thereafter, the cover tape 32 covers the opening of the recess 31a, and the packaging is completed. In packing the multilayer capacitor C4 into the packaging material 30, only the multilayer capacitor C4 determined in the determination step that the second main surface Lb is facing upward is selected, and the selected multilayer capacitor C4 is selected. The second main surface Lb may be stored in the recess 31a while maintaining the state in which the second main surface Lb faces upward.

  As described above, according to the fourth embodiment, the direction of the multilayer capacitor C4 can be easily and reliably determined without using an image processing technique. Further, the direction of the multilayer capacitor C4 can be determined without forming a mark for recognizing the direction on the element body L. Therefore, when determining the direction of the multilayer capacitor C4 that has been reduced in size, the direction can be reliably determined.

  Also in the fourth embodiment, when the multilayer capacitor C4 is manufactured, the electrode pattern that forms the first internal electrode 11 and the electrode pattern that forms the second internal electrode 13 may be formed. Compared to the first and second embodiments, the manufacturing process is simplified.

  The preferred embodiments of the present invention have been described above. However, the present invention is not necessarily limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

  The number of the first inner conductors 15 is not limited to one in the above-described embodiment, and may be plural. The number of the second inner conductors 17 is not limited to one in the above-described embodiment, and may be plural. The shape of the first inner conductor 15 is not limited to the shape in the above-described embodiment, and may be a shape connected to the first terminal electrode 1 and the first outer conductor 3. The shape of the second inner conductor 17 is not limited to the shape in the above-described embodiment, and may be a shape connected to the second terminal electrode 2 and the second outer conductor 4. The positions of the first and second inner conductors 15 and 17 in the facing direction of the first and second main faces La and Lb, that is, the stacking positions are not limited to the positions shown in the above-described embodiment, You may be located in the same plane.

  The thickness of the outer layer portion L2 is set to be thicker than the thickness of the outer layer portion L3, but is not limited thereto. The thickness of the outer layer portion L3 may be set to be thicker than the thickness of the outer layer portion L2. In this case, the multilayer capacitors C1 and C2 are accommodated and packed in the recess 31a so that the first main surface La faces the opening side of the carrier tape 31. In the packaging of the multilayer capacitors C1 and C2 into the packaging material 30, only the multilayer capacitors C1 and C2 that have been determined in the determination process that the first main surface La is facing upward are selected, and the selected multilayer capacitors are selected. The capacitors C1 and C2 may be accommodated in the recess 31a while maintaining a state in which the first main surface La faces upward. Further, the thickness of the outer layer portion L2 may be set to be equal to the thickness of the outer layer portion L3.

  The present invention can be applied to a multilayer capacitor whose directionality is defined by some factor. For example, as shown in FIG. 30, in the multilayer capacitor C5, when the first main surface La is rounded, the multilayer capacitor C5 is mounted such that the second main surface Lb of the element body L faces the electronic device. It is preferable. That is, when the multilayer capacitor C5 is mounted so that the first main surface La faces the electronic device, the multilayer capacitor C5 is inclined due to the roundness of the first main surface La, and picking with the suction head becomes difficult, or the electronic device is attached to the electronic device. There is a possibility of problems such as rolling when placed.

  In the multilayer capacitor C5 shown in FIG. 30, the first main surface La is accommodated in the recess 31a and packed so that the first main surface La faces the opening side of the carrier tape 31. In the packaging of the multilayer capacitor C5 into the packaging material 30, only the multilayer capacitor C5 determined in the determination step that the first main surface La is facing upward is selected, and the selected multilayer capacitor C5 is selected. The first main surface La may be stored in the recess 31a while maintaining a state in which the first main surface La faces upward.

  The multilayer capacitor C5 may not include the second inner conductor 17, like the multilayer capacitor C2 described above. In the multilayer capacitor C5, as in the multilayer capacitor C3 described above, the conductors arranged in the element body L are only the plurality of first and second internal electrodes 11, 13, and all the first and second internal electrodes 11 are disposed. , 13 may include main electrode portions 11a, 13a, lead electrode portions 11b, 13b, and lead electrode portions 11c, 13c. In the multilayer capacitor C5, as in the multilayer capacitor C4 described above, the conductors arranged in the element body L are only the plurality of first and second internal electrodes 11, 13, and all the first and second internal electrodes 11 are disposed. However, you may have the main electrode part 11a, the extraction electrode part 11b, and the extraction electrode part 11c.

  DESCRIPTION OF SYMBOLS 1 ... 1st terminal electrode, 2 ... 2nd terminal electrode, 3 ... 1st external conductor, 4 ... 2nd external conductor, 11 ... 1st internal electrode, 13 ... 2nd internal electrode, 15 ... 1st internal conductor, 17 2nd internal conductor, 21 ... Discriminating device, 23 ... 1st probe, 25 ... 2nd probe, 27 ... Measuring instrument, C1, C2 ... Multilayer capacitor, L ... Elementary body, La ... 1st main surface, Lb ... 1st Two main surfaces, Lc ... first side, Ld ... second side, Le ... third side, Lf ... fourth side.

Claims (5)

A method for manufacturing a multilayer capacitor, comprising:
As the multilayer capacitor,
First and second main surfaces having substantially rectangular shapes opposed to each other, and first and second main surfaces extending in the first side direction of the first and second main surfaces so as to connect the first and second main surfaces and facing each other. A first and second side surface; and a third and a fourth side surface extending in a second side direction orthogonal to the first side direction so as to connect the first and second main surfaces and facing each other. Body,
A first terminal electrode disposed on the first side surface of the element body;
A second terminal electrode disposed on the second side surface of the element body;
A first outer conductor disposed on the third side surface of the element body;
A second outer conductor disposed on the fourth side surface of the element body;
A first internal electrode disposed in the element body and connected to the first terminal electrode;
A second internal electrode disposed in the element body so as to face the first internal electrode in the facing direction of the first and second main surfaces, and connected to the second terminal electrode;
A first inner conductor disposed in the element body and connected to the first terminal electrode and the first outer conductor;
A second inner conductor disposed in the element body and connected to the second terminal electrode and the second outer conductor;
The element body is disposed such that the first inner electrode, the second inner electrode, the first inner conductor, and the second inner conductor are disposed between the inner layer portion and the inner layer portion therebetween. A pair of outer layer portions,
One of the outer layer portions includes the first main surface, and the other outer layer portion includes the second main surface,
A preparation step of preparing a multilayer capacitor in which the thickness of one outer layer portion is thicker than the thickness of the other outer layer portion ;
A first probe is brought into contact with one of the first terminal electrode and the second terminal electrode, and a second probe is brought into contact with either the first outer conductor or the second outer conductor, and the multilayer capacitor And a discrimination step of discriminating the direction of the multilayer capacitor. A method for manufacturing a multilayer capacitor, comprising:
As the multilayer capacitor,
First and second main surfaces having substantially rectangular shapes opposed to each other, and first and second main surfaces extending in the first side direction of the first and second main surfaces so as to connect the first and second main surfaces and facing each other. A first and second side surface; and a third and a fourth side surface extending in a second side direction orthogonal to the first side direction so as to connect the first and second main surfaces and facing each other. Body,
A first terminal electrode disposed on the first side surface of the element body;
A second terminal electrode disposed on the second side surface of the element body;
A first outer conductor disposed on the third side surface of the element body;
A second outer conductor disposed on the fourth side surface of the element body;
A first internal electrode disposed in the element body and connected to the first terminal electrode;
A second internal electrode disposed in the element body so as to face the first internal electrode in the facing direction of the first and second main surfaces, and connected to the second terminal electrode;
A first inner conductor disposed in the element body and connected to the first terminal electrode and the first outer conductor;
The element body includes an inner layer portion in which the first inner electrode, the second inner electrode, and the first inner conductor are disposed, and a pair of outer layer portions that are disposed so as to sandwich the inner layer portion therebetween. Have
One of the outer layer portions includes the first main surface, and the other outer layer portion includes the second main surface,
A preparation step of preparing a multilayer capacitor in which the thickness of one outer layer portion is thicker than the thickness of the other outer layer portion ;
A first probe is brought into contact with one of the first terminal electrode and the second terminal electrode, and a second probe is brought into contact with either the first outer conductor or the second outer conductor, and the multilayer capacitor And a discrimination step of discriminating the direction of the multilayer capacitor. A method for manufacturing a multilayer capacitor, comprising:
As the multilayer capacitor,
First and second main surfaces having substantially rectangular shapes opposed to each other, and first and second main surfaces extending in the first side direction of the first and second main surfaces so as to connect the first and second main surfaces and facing each other. A first and second side surface; and a third and a fourth side surface extending in a second side direction orthogonal to the first side direction so as to connect the first and second main surfaces and facing each other. Body,
A first terminal electrode disposed on the first side surface of the element body;
A second terminal electrode disposed on the second side surface of the element body;
A first outer conductor disposed on the third side surface of the element body;
A second outer conductor disposed on the fourth side surface of the element body;
A plurality of first and second internal electrodes respectively arranged alternately in the opposing direction of the first and second main surfaces in the element body,
The element body includes an inner layer portion in which the plurality of first and second internal electrodes are arranged, and a pair of outer layer portions arranged so as to sandwich the inner layer portion therebetween,
One of the outer layer portions includes the first main surface, and the other outer layer portion includes the second main surface,
The thickness of one of the outer layer portions is thicker than the thickness of the other outer layer portion,
All of the plurality of first inner electrodes are connected to the first outer conductor;
A preparation step of preparing a multilayer capacitor in which all of the plurality of second inner electrodes are connected to the second outer conductor ;
A first probe is brought into contact with one of the first terminal electrode and the second terminal electrode, and a second probe is brought into contact with either the first outer conductor or the second outer conductor, and the multilayer capacitor And a discrimination step of discriminating the direction of the multilayer capacitor. A method for manufacturing a multilayer capacitor, comprising:
As the multilayer capacitor,
First and second main surfaces having substantially rectangular shapes opposed to each other, and first and second main surfaces extending in the first side direction of the first and second main surfaces so as to connect the first and second main surfaces and facing each other. A first and second side surface; and a third and a fourth side surface extending in a second side direction orthogonal to the first side direction so as to connect the first and second main surfaces and facing each other. Body,
A first terminal electrode disposed on the first side surface of the element body;
A second terminal electrode disposed on the second side surface of the element body;
A first outer conductor disposed on the third side surface of the element body;
A second outer conductor disposed on the fourth side surface of the element body;
A plurality of first and second internal electrodes respectively arranged alternately in the opposing direction of the first and second main surfaces in the element body,
The element body includes an inner layer portion in which the plurality of first and second internal electrodes are arranged, and a pair of outer layer portions arranged so as to sandwich the inner layer portion therebetween,
One of the outer layer portions includes the first main surface, and the other outer layer portion includes the second main surface,
The thickness of one of the outer layer portions is thicker than the thickness of the other outer layer portion,
A preparation step of preparing a multilayer capacitor in which all of the plurality of first internal electrodes are connected to the first outer conductor ;
A first probe is brought into contact with one of the first terminal electrode and the second terminal electrode, and a second probe is brought into contact with either the first outer conductor or the second outer conductor, and the multilayer capacitor And a discrimination step of discriminating the direction of the multilayer capacitor. The determination on the basis of the determination direction in step, the manufacturing method of the multilayer capacitor according to any one of claims 1 to 4, characterized in that the packaging step further includes a to pack by disposing the multilayer capacitor.

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